The present invention also relates to a process for the preparation of meropenem of the formula (I) in sterile form and also provides an improved process for the preparation of the compound of the formula (V) which is an important intermediate in the synthesis of meropenem.本発明は、無菌形態の式(I)のメロペネムの調製方法に関し、かつ、メロペネムの合成において重要な中間体である式(V)の化合物の改善された調製方法も提供する。